This is a brand new, never used BLACK carry on backpack. Dimensions: 20.1 x 13.4 x 9.8 inches/ 51 x 34 x 25 cm; It has a capacity of 40 litres. Multiple exterior compression buckle straps for adjusting the height based on your need. Side bottle pocket for extra storage and adjustable sternum strap and waist strap for stability and upgraded strap buckle for durability Designed to fit the maximum size allowed on an IATA flight, fits in the overhead compartment as well as the under seat as storage in flight; A true hands-free carry on with suppressible shoulder straps, easily to convert from duffel into a backpack in seconds 1 front zip pocket with multiple interior slip pockets, second compartment fits most 15.6 inch laptops,